31321212330122 has 24 divisors (see below), whose sum is σ = 55498694689440. Its totient is φ = 13141767409680.

The previous prime is 31321212330071. The next prime is 31321212330157. The reversal of 31321212330122 is 22103321212313.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 31321212330091 and 31321212330100.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4212101222 + ... + 4212108657.

It is an arithmetic number, because the mean of its divisors is an integer number (2312445612060).

Almost surely, 2^{31321212330122} is an apocalyptic number.

31321212330122 is a deficient number, since it is larger than the sum of its proper divisors (24177482359318).

31321212330122 is a wasteful number, since it uses less digits than its factorization.

31321212330122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8424209918 (or 8424209905 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 31321212330122 its reverse (22103321212313), we get a palindrome (53424533542435).

The spelling of 31321212330122 in words is "thirty-one trillion, three hundred twenty-one billion, two hundred twelve million, three hundred thirty thousand, one hundred twenty-two".